프로그램 실행 중 에러 메시지 buffer overflow detected 관련 질문이요

======= Backtrace: =========
/lib/libc.so.6(__fortify_fail+0x48)[0x53fce8]
/lib/libc.so.6[0x53dde0]
/lib/libc.so.6[0x53d4d8]
/lib/libc.so.6(_IO_default_xsputn+0xc8)[0x4b4e48]
/lib/libc.so.6(_IO_vfprintf+0x14dc)[0x488c2c]
/lib/libc.so.6(__vsprintf_chk+0xa7)[0x53d587]
/lib/libc.so.6(__sprintf_chk+0x2d)[0x53d4cd]
./fss[0x804e93f]
./fss[0x804a8f7]
/lib/libpthread.so.0[0x5ec32f]
/lib/libc.so.6(clone+0x5e)[0x52727e]
======= Memory map: ========
00110000-00111000 r-xp 00110000 00:00 0 [vdso]
00142000-0014f000 r-xp 00000000 08:01 720979 /lib/libgcc_s-4.3.0-20080428.so.1
0014f000-00150000 rw-p 0000c000 08:01 720979 /lib/libgcc_s-4.3.0-20080428.so.1
00429000-00445000 r-xp 00000000 08:01 720954 /lib/ld-2.8.so
00445000-00446000 r--p 0001c000 08:01 720954 /lib/ld-2.8.so
00446000-00447000 rw-p 0001d000 08:01 720954 /lib/ld-2.8.so
00449000-005ac000 r-xp 00000000 08:01 720955 /lib/libc-2.8.so
005ac000-005ae000 r--p 00163000 08:01 720955 /lib/libc-2.8.so
005ae000-005af000 rw-p 00165000 08:01 720955 /lib/libc-2.8.so
005af000-005b2000 rw-p 005af000 00:00 0
005b4000-005db000 r-xp 00000000 08:01 720966 /lib/libm-2.8.so
005db000-005dc000 r--p 00026000 08:01 720966 /lib/libm-2.8.so
005dc000-005dd000 rw-p 00027000 08:01 720966 /lib/libm-2.8.so
005df000-005e2000 r-xp 00000000 08:01 720958 /lib/libdl-2.8.so
005e2000-005e3000 r--p 00002000 08:01 720958 /lib/libdl-2.8.so
005e3000-005e4000 rw-p 00003000 08:01 720958 /lib/libdl-2.8.so
005e6000-005fb000 r-xp 00000000 08:01 720956 /lib/libpthread-2.8.so
005fb000-005fc000 r--p 00014000 08:01 720956 /lib/libpthread-2.8.so
005fc000-005fd000 rw-p 00015000 08:01 720956 /lib/libpthread-2.8.so
005fd000-005ff000 rw-p 005fd000 00:00 0
0061f000-00632000 r-xp 00000000 08:01 720967 /lib/libz.so.1.2.3
00632000-00633000 rw-p 00012000 08:01 720967 /lib/libz.so.1.2.3
00c00000-00c16000 r-xp 00000000 08:01 720971 /lib/libnsl-2.8.so
00c16000-00c17000 r--p 00015000 08:01 720971 /lib/libnsl-2.8.so
00c17000-00c18000 rw-p 00016000 08:01 720971 /lib/libnsl-2.8.so
00c18000-00c1a000 rw-p 00c18000 00:00 0
00c96000-00ddf000 r-xp 00000000 08:01 204169 /usr/lib/libxml2.so.2.6.32
00ddf000-00de4000 rw-p 00149000 08:01 204169 /usr/lib/libxml2.so.2.6.32
00de4000-00de5000 rw-p 00de4000 00:00 0
08048000-08079000 r-xp 00000000 08:01 670482 /root/fss/pkg/fss
08079000-0807a000 rw-p 00031000 08:01 670482 /root/fss/pkg/fss
0807a000-080fb000 rw-p 0807a000 00:00 0
085b7000-085d8000 rw-p 085b7000 00:00 0 [heap]
b0d63000-b0d64000 ---p b0d63000 00:00 0
b0d64000-b1764000 rw-p b0d64000 00:00 0
b1764000-b1765000 ---p b1764000 00:00 0
b1765000-b2165000 rw-p b1765000 00:00 0
b2165000-b2166000 ---p b2165000 00:00 0
b2166000-b2b66000 rw-p b2166000 00:00 0
b2b66000-b2b67000 ---p b2b66000 00:00 0
b2b67000-b3567000 rw-p b2b67000 00:00 0
b3567000-b3568000 ---p b3567000 00:00 0
b3568000-b3f68000 rw-p b3568000 00:00 0
b3f68000-b3f69000 ---p b3f68000 00:00 0
b3f69000-b4969000 rw-p b3f69000 00:00 0
b4969000-b496a000 ---p b4969000 00:00 0
b496a000-b536a000 rw-p b496a000 00:00 0
b536a000-b536b000 ---p b536a000 00:00 0
b536b000-b5e4c000 rw-p b536b000 00:00 0
b5e4c000-b5e4d000 ---p b5e4c000 00:00 0
b5e4d000-b684d000 rw-p b5e4d000 00:00 0
b684d000-b684e000 ---p b684d000 00:00 0
b684e000-b693b000 rw-p b684e000 00:00 0
b693b000-b693c000 ---p b693b000 00:00 0
b693c000-b733c000 rw-p b693c000 00:00 0
b733c000-b733d000 ---p b733c000 00:00 0
b733d000-b742a000 rw-p b733d000 00:00 0
b742a000-b742b000 ---p b742a000 00:00 0
b742b000-b7f0f000 rw-p b742b000 00:00 0
b7f19000-b7f1b000 rw-p b7f19000 00:00 0
b7f1b000-b7f1c000 ---p b7f1b000 00:00 0
b7f1c000-b7f22000 rw-p b7f1c000 00:00 0
bfb0c000-bfb21000 rw-p bffeb000 00:00 0 [stack]
중지됨

다음과 같은 오류 메시지가 뜨는 데 원인이 무엇인가요?